Attachment for drilling machines



March 9 1926.

P. TOORKS ATTACHMENT FORDRILLING MACHINES Filed March 3l 1925 l ananas aan. a, reas.

nrrse SITA Tse Parana ETEREOOBKS, OF BOSTON, MASSACHUSETTS.

FFME.

' I nrracmmn'r For. Dalmine inkomens.

,appnqamn mea nafta ai, 1925. serai no'. rasca T all. whom t may concern.'

cable to that class of mac paratus.

'anism, and

Be it known that I, PETER Toons, a citizen of Latvia, residing at Boston, 1n the county of Suffolk and State of Massachu-- setts, have invented certain new and useful Improvements in Attachments for Drilling Machines', yof which the following is a specitication.

vention relates to attachmentsfor -Mra drilling machines, and is particularly applimes comprlsed o portable oir-*manually operated drilling ap- My object is tov provide an attachment that ma he substituted for the drill chuck, comme y used with this type ofapparatus, and to transfer the' chuck to- 'an angularly disposed shaft','driven`rotatively from the spindle. of the-:apparatus, thus making it ossible-to operate in cavities or other-'coned spaces.

@rdinarillt isimpossibleto operate with a portable 'lling apparatus, whether operated by hand or otherwise on account of the space reqiiired for the operative mech- -necessary to use a. ratchet vdrill or a lgiinlet as the case demands.

Ase

atively com p'act extension My vention is' fully described and. illus-'- l i tratedl 'inthe accompanying specifications With my invention, attached to the ordinaryfdrilling-'apparatua the action of the operative mechanism is which may be used ere it would be impossible to opin .places w y/on thesurface to be drilledl and claim, and the drawings forming a part ratns, indicating t a mo'dication o 'my attachment Fig, 4shows the "attachment as adapted 'touse with anelectric drill.

- journaled the spur hevel4 adapted toherotated en rts stud hy means thereof, in' which Fi 1 isa sectional y'elevation Vof a preferre form of my mvention as used in connection with a hand operated'drillin appaset screw@` ratus, commonly known as a 'breast y rill.

Fig.l 2 isa trament of; thesame apae-drill chuck asus' in ordinary practice.,v

4liiig. a' ydia ammatio representation et ln the drawin j1s a paratns in. whic 10is the framework or body, 11 ahandletor steadyingthe, apparatas when in use. @n a stud 12 projecting from a hess, integral ,with the' ame 10, is

Vthe pressure portion of the'spindle at 22 on the transmittedto a relma inning ap! 'die 17. The tap 'edgear- 13, which is of the crank 14, provided with the handle 1 5.l The spur gear 13 meshes with the pinion 16, secured.- to the lspindle 17.

This spindle is journaled at 18-iI1 a bearing which serves both for rotary action of the spindle and as endwise on the spindle when in operation. In addition the spindle is journaled in the hub. 19, which serves as the main bearing and o ersa convenient projecf tion to which my attachment may be secured.

'a thrust bearing to resistl and a drill chuck 21 is tapped to d 1 rpm e where it is possible to bring di- Irect pressure to bear on the handle 11 while'4 the crank 14 is being operated, the apparatus is ell'ective. 1^

To extend such eiec'tlve action Irhave` pro-v this application.

Inhe referred v-form herein shown,v25 is a sup orting member, which may be prefer-- ably 1n the form ofa tubular post. This member 1s socketed at one end, 26, t receive the spindle bearing hub of a drilling aparatus of. the kind described, the socket fein of suliicient diameter to permit-the use v vided the attachment which is the subjectof tov of dlierent bushings, 27 which may be rc-f' quired for use with dierent makes of drilling apparatus. l To secure the supporting member/to the aforementioned hub j one means is to use a 'the bushing,` abutting the huh 19.. The supporting member 25 'provides a' bearing for the shaft 29, the axis ot which coincides withtheextended axis 17 ofthe apparatus.

The upper end of this shaft is enlarged at 3Q, and tapped at 31 to engage thecorrespondinfgly threaded ortion '20, of the'spinoleisl nii. such' depth,

es i 28 which is tapped in the wall of the socket,"and, passing through the m'de of nos thatthe end 22 o thesnindle it? will engage at'thebottomthereof as'nt2, and continued rotation ofthe spindle?? willmaer-y ate to. rotatefthe shaft 29. The setscrew28 may now .be l,tightened entire hub 12, and7 the attachment rigidly securedtothe drill# ythe spindle 17.

ing apparatus, Without affecting the rotative action of the spindle 17 and the 'shaft' 29.

y Rigidly secured to the other .end of the shaft 29 is a bevel gear 33 Which-meshes With a corresponding gear 34 rigidly secured to ,the shaftv 35. This shaft is journaled in an in Fig. 3 the shaftsl are shown operatively connected by means of a universall joint 39, and such construction maybe used Where the 'angle between theaxes of the shafts vvill permit. It Will be obvious that the elements curing;- it to a drilling apparatus, may be varied in construction Without departing from'the spirit and scope ofmy invention,

I, and that different forms .of portable-drilli ing apparatusmay 'be In V@this attachment is shown as api plied to an ordinary portablel electric drill-4 ing apparatus, A beingamotor, with elec! tric lead Wires 40. lThehub 19` ofthe motor is utilized ina similar manner to that already described,l and the motor shaft 17 is adapted ,to operate in similar manner to spindle 17"'of the hand apparatus.

Having .thus described my invention, I cla-im:

.Anattachm'ent for a hand drill compris- 'ingfa Supplemental frame, having means for attachment- -to the frame of said drill, after the removal of the chuck from the latter; a shaftk rotatably v'vi'th a threaded socket -to receive the threaded lextremity of thedrill spindle, Va'- cated bythe chuck; asupplementalfspindlc rotatably mounted in the supplemental frame at an angle with relation to the axis .of said shaft, said spindle having a threaded l -extremity Whichis a-counterpart of the of this attachment, and the means for se-vthreaded extremity of the drill spindle, and to Which the chuck is transferred from the drill spindle; land means by which' said sockete'dshaft operates to drive the supple'-l menta-l spindle, for the purpose of rotating the chuck on the sup lement'al.. spindle.

` ETER. TOORKS.

mounted insaid supple mental frame, and constructed at one entit 

